Process for the production of rolled and stamped table and kitchen articles



Jan. 9, 1940. P. BOSBACH ET AL 2,136,602

PROCESS FOR THE PROD ION OF-ROLLED AND STAMPED TABL ND TCHEN ARTICLES ed Nov. 6, 1937 177221672 0122' Hunky/A), Em-e Ka e; 7. M.

Mama

Patented Jan. 9, 1940 STAMPED ABTIUIES.

'rsnnanmn PeterBoeba-ch "is Emil nus,

' Application November 0, 19st, Serial In Germany November 13, 1886 The present invention relates to- 'processes for the production of. rolled and-stamped table and ,kitchenarticles, particularly spoons, made of iron, rustless steel,alpacca and aluminium. In

"I -the production of articles of this'kind, forte:-

ample spoons, according to the hitherto known processes, preliminary workpieces or pat-' terns arejfirst stamped out of the work material. Iii-these workpieces the handle part is' 9- ,already preformed whilst the scoop or similar part-consists of a rectangular lug" .which is only of small breadth but which correspondsih it'slength vapproximately to the length of the. scoop oi. the article.- Then the said lug is rolled out 1 in the direction of its breadth until it is some what greater in its iengthand breadth than the flattened out scoop part would be. After the rolling operation the shape of the scoop 'partis stamped'out and the scoop part is then flanged 50 by of presses inknown manner. Inasmuch as the material used for thea'production of one of the tools serving for the final pressing operation is so shaped that the finished scoop part exhibits thickened edges. This process has,

however, the disadvantage that for'the finishing of .the scoop part of thespoon, it is necessary to 5 Y employ a number of tools, with which the scoop part is gradually pressed .outinto'its final size, and, besides this, a considerable expenditure of power is'necessary tor the pressing operation.

According to the invention. it is proposed to eliminate the defects set'iorth above by providinga process wherein the lug for the scoop part is rolled out transversely tohits" longitudinal. direction in such mannerthat it acquires an unequal thickness in its longitudinal direction and that a thereby a thickening of the tip and the'handle end is effected. Preferably part, which has been rolled--in3its longitudinal'"I direction, is at the saznetime given, a variable thickness in the transverse dlrection-,1whereby lit the-rims of the scoop part are thickened the preliminary workpieces is of'the same thickness at all parts, there is formed, during the rolling out of the scoop lug, a broad rectangle, the :5 thickness of whichis comparatively small but is thesame atallparts. 'I'hishas the disadvan-- tage that in the finished flanged scoop part the tip and the rims. of the said part become very thin and also sharp. As a result oi this the ap- 80 pearance of the finished spoon is very much depreciated, inasmuch aseven when high priced work material is employed the impression of inferiority is produced. Furthermore, the known process has the disadvantagethat in stamping 88 out the flattened scoop part from the rolled scoop lug, a fairly considerable amount of waste is produced, the value of which is very small inasmuch part which is to be stamped 'dutof it', softhat f as, for example, rustless steel waste is not willingly taken back by the raw material factories.

so In order to economise material in the manufacture ofspoons, it has already been proposed to produce the spoons by rolling, pressing, drawing and hammering from a cut-ofi piece of a round rod of the material in question. Even though in 45 this manner it may be possible to lessen the quantity'oi' waste, still at the same time the much more dimcult process 01' manuiacture, gives rise toeuchhighcosts that theresultistheoppoeite 0t an economy.

In It has further already been proposed to pro- As a consequence of this ,construction tfl ij.

spoons produced according to'the novel are particularly'good in'respect -ito their and applicability. By the new" rolling process, a 26 broad uniiormly thick "rest 139 1118 which yields considerable waste the cutting out of the scoop part is not, but, on the other hand, the lug forthe'scoop part rolled according to the novel process exhibits-a Io close approximation to the profile or the scoop only very little wasteis produced; At thesametime, moreover, by the rolling operation theltip of the scoop part and also the handle are gradually increasingly thickened. Further-i more the lug for the scoop part may advantageously be also rolled out in such manner that it, is of different thicknesses in they transverse di rection -"so'that the edges of the 'said'part are 49 duce the scoop part of the spoon by pressing instead of by rolling, and for this purpose to give the-lug ofthe scoop part, during the'stamplng operation, the shape which the said ggpartistohavelateron. Inthisprocessatleast I'ig.-3 isasidsvlewofIig. 8,j.

somewhat thickened." l'he succeeding trimming operation imparts a-very nice shape to the said scoop part, inasmuch as the edges are nolcnger thin. and sharp, but exhibit over the whole oval oi the part-an. increased thickness which'incs s s somewhat towards the tipand the handle endand is agreeablein use. 1 A preferred method of app ng theinventlqnin practice. is illustrated by way of example in the accompanying drawing, in which:

Fig. 1 is a pattern, a

2 is a plan of apattern with the lug for to plan of a' preliminary workpiece or the scoop part rolled out, 1 C

the'lug for the scoop] i as hitherto, Produced, i Q I end thereof as w Fig. 4 shows a finished spoon in plan, and

Fig. 5 shows a cross section through the scoop part taken on the line AA of Fig. 2. 1'

Referring to the drawing:

For the production of spoons of iron, aipacca,

aluminium or rustless' steel, the work material is cut into strips out of which the preliminary workpieces or patterns are stamped. During the operation of stamping out of the patterns the handle am at once given its final form in the carried out transversely to its longitudinal di-' rection., By the new method of rolling, the lug for the scoop part is not, as hitherto, rolled out ,0! iron, rustless steel, 'alpacca, aluminium and, similar materials, the steps of: stamping out 01 into a broad rectangle (as indicated in chain dotted lines in Fig. 2), but its shape approximates more closely to that of the scoop part in its final form. The rolling operation is carried out.

in such manner that the lug for the scoop part retains in proximity to the tip 0 and the handle end d approximately the original thickness.

out the transverse rolling operationgif desired, in such manner that the thickness also gradually increases towards the edges f of the scoop part,

so that a cross section corresponding to that shown in Fig. 5 is obtained. I

The waste which arises in the succeeding .op-

lines have to be cut away (see Figs. 2 and 3). Then the scoop part is brought into its final form by a trimming operation and the handle At the same time, however, it is possible .tocarryis also shaped out and -:=bent. During this operation, by suitable rolling, the tip and also ii desired, the ed es! the spoon can be shaped to a curved form. any desired v decorative working .operationshave been carried .out spoonis "then ready for sending out.

It.i's,' -.o-t course, to be-understood that theinq ventionis not restricted to the example illustrated but that many other constructional forms andmodiflcations are possible. Thus, for example,-the process might also be employed in the' production of spoons having a circular scoop' part,-basting-spoons or other table or kitchen articles, the edges of which are subjected to particularly great wear,

We claim: y In a method of manufacturingblanks for table and kitchen articles, particularly spoons made preliminary workpiece, such that the handle porits width and the'scoop portion receiyesthe form of a narrow lug having substantially the length ot'the finished scoop part; and then subjecting the said scoop portion to a, rolling operation transversely to its longitudinal direction and spreading the intermediate portion to a considerably greater extent than the endarid theportion adjacent to the handle, sothat the said scoop portion is given a thicknesswhich increases longitudinally and transversely from the intermediate portion of the scoop towardsthe tip and handle ends and towards the sides thereoff, saidtip and handle ends retaining substantially their original thickness. PETER BOSBACH.

EMIL KELLER. 

